Water Characteristics of The Fishing Ground of Parrotfish (<i>Scarus Rivulatus</i>) In Seribu Islands, Jakarta

Parrotfish ( Scarus rivulatus ) is a member of the Scaridae that lives in coral reef ecosystems and is categorized as a herbivore that eats algae attached to coral. Fishermen catch this fish from Panggang Island in the Thousand Islands Cluster. This study aims to observe the water condition of the fishing grounds for parrotfish, conducted from July to November 2022, at five locations (Karang Bongkok, Karang Congkak, Semak Daun, Karang Beras, and Air Islands), which are the primary fishing grounds in the Seribu Islands. Water quality parameters (depth, temperature, salinity, pH, and dissolved oxygen (DO)) were measured. The results of the water condition observations were adjusted to meet the water quality standards for marine biota (Ministry of Environment Regulation No. 51, 2004), and the data were analyzed using the Pollution Index. Based on the results of the observations, it is known that the conditions of the parrotfish fishing ground had characteristics of water depth of 0.8-3.78 m, temperature 28310C, salinity 30-33 PSU, pH 7-8, and DO 6.3-7.9 ppm. These conditions indicate that the water conditions of the parrotfish fishing grounds are suitable for the life of the fish. According to the Pollution Index value (PI=0.73-0.79), the water is categorized as in good condition.